Heap, an IT professional, has been helping activists in Iran circumvent government restrictions by maintaining lists of Internet proxies -- which can route traffic around blocks and help users remain anonymous.

Right now, the work is for naught, as Iran has blocked nearly all Internet access throughout the country.

For his trouble, Heap has been subject to counter-attacks and emailed threats.

But he hasn't given up trying to help, especially since the positive responses have been so powerful.